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JE Ultra Series Audi 2.5L TFSI Piston – 82.50 mm Bore – 1.165 in. CH, -7.50 CC
Your Price: $322.61 SKU 367846S -
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JE Pistons Chevrolet Big Block Piston Kit – 4.600 in. Bore – 1.060 in. CH, 18.00 CC
MSRP: $1,335.55
Your Price: $1,262.10 SKU 377854 -
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SRP Pro 2618 Chrysler 6.4L Hemi Piston Kit – 4.090 in. Bore – 1.206 in. CH, -4.80 CC
MSRP: $1,001.96
Your Price: $876.90 SKU 385314 -
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JE Pistons BMW B58B30 Piston Kit – 3.228 in. Bore – 1.307 in. CH, -11.10 CC
MSRP: $1,394.59
Your Price: $1,232.66 SKU 371718 -
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JE Pistons Chevrolet Small Block Piston Kit – 4.030 in. Bore – 1.560 in. CH, -3.80 CC
MSRP: $790.27
Your Price: $746.81 SKU 373699 -
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JE Pistons Porsche 2.0L Aircooled Piston Kit – 3.150 in. Bore – 1.335 in. CH, 36.70 CC
MSRP: $2,161.85
Your Price: $1,619.37 SKU 381241 -
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JE Pistons Porsche 2.7L Aircooled Piston Kit – 3.543 in. Bore – 1.335 in. CH, 25.30 CC
MSRP: $2,161.85
Your Price: $1,619.37 SKU 381250 -
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SRP Pro 2618 Chevrolet LS Gen III/IV Piston Kit – 3.780 in. Bore – 1.314 in. CH, -4.40 CC
MSRP: $1,001.96
Your Price: $901.95 SKU 315548 -
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JE Pistons Ford 3.5L EcoBoost Gen 1 V6 Piston Kit – 92.50 mm Bore – 1.240 in. CH, -8.60 CC
MSRP: $1,394.59
Your Price: $1,232.66 SKU 315146 -
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SRP Pro 2618 Chevrolet LS Gen III/IV Piston Kit – 3.780 in. Bore – 1.314 in. CH, -12.50 CC
MSRP: $1,001.96
Your Price: $901.95 SKU 315552 -
JE Pistons Chevrolet Small Block Piston Kit – 4.125 in. Bore – 1.000 in. CH, -3.50 CC
Your Price: $193.82 SKU 377972L
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With racing roots dating back over 70 years, JE Pistons is the industry leader in high-performance forged pistons. JE’s performance and quality is the result of decades of experience gained working with elite engine builders and racers from almost all types of motorsports competition, and is proven in our victories, championships, and innovations. JE controls every step of our manufacturing process, designing, forging, and machining all our pistons 100% in-house in our USA manufacturing facility. Find the perfect set of pistons for your next build off-the-shelf, or work with our technical experts to create a completely custom set.
JE History
The origins of what we know today as JE Pistons can be traced back to 1912 and the Los Angeles foundry of William Jahns Sr. and his company W.H. Jahns. Employing the tagline, “Nothing but Pistons,” the W.H. Jahns company produced pistons and semi-finished pistons until 1948, when Jahns Sr. retired. Meanwhile, Jahns’ son, William “Uncle Bill” Jahns Jr., started and had been working on his company Jahns’ Racing Pistons since 1947. Shortly after, the business became Jahns’ Engineering Pistons, and was finally shortened to JE Pistons.
Through the following years, JE Pistons’ technology evolved, from mastering casting technology in the 60s to researching and implementing forging technology in the 70s. Numerical Controlled (NC) machines were introduced to manufacturing in the early 80s, which was quickly improved to the use of Computer Numerical Controlled (CNC) machines and a proprietary piston design and machining program in the mid-80s.
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Shelf stock not quite cutting it for your build? Starting today, save 20% on your rings with ANY custom piston order! Learn more and find our custom order form here: www.jepistons.com/custom-pistons/ ... See MoreSee Less




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Whether it’s a performance upgrade or an all-out race build, the #JEpistons EcoBoost line is a definite performance step up from the factory replacements. Our lineup offers many upgrades and are available in numerous bore sizes and compression-ratio options.
What if you are looking to take your EcoBoost build to the next level? The range of possibilities for our custom pistons is second to none. We can design EcoBoost pistons to handle the most extreme environments, allowing the serious EcoBoost builders out there to push them to new limits!
Shop EcoBoost pistons now 👉 jepistons.com
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Fresh set of S55 ready for @fastlane_gbr's next BMW build. This forged se#jepistonsstons will be a massive upgrade over the OEM piston#je
#forgedpistonss#racingpistonss#BMW #bmws55m#PoweredByJEdbyje
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⚡️ Cyber Monday Sale is happening NOW! ⚡️ This is your last chance to save up to 25% off your #jepistons order!
🛒 Order now to be entered for the chance to receive your product for FREE! 👇
jepistons.com/shop
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www.jepistons.com
Shop Forged Racing Pistons AUTOMOTIVE Domestic, European, Sport Compact, Drag, Circle Track POWERSPORTS Dirt Bike, Street, UTV, ATV, V-Twin, Snowmobile Over0 CommentsComment on Facebook
Up to 25% off your favorite JE Piston products this Black Friday, and the entire weekend! No promo code needed! 🎉🎁 Shop now 👉 jepistons.com ... See MoreSee Less




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Thankful we get to do what we love with our friends and family who mean the most to us. 🍁🦃 Happy Thanksgiving from everyone here at JE! Don't forget our Black Friday sale is already live 📲 jepistons.com to get up to 25% off! ... See MoreSee Less




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Happy Thanksgiving ❤🤗
What makes our SRP Pro 2618 pistons special? Same great SRP piston, with the all-out strength of 2618 aluminum! The SRP line of pistons have proven strength and performance are possible on a budget, while the SRP Pro 2618 pistons take that all to a whole new level. Bringing the most strength we've ever seen to SRP 💪
Complete details about our SRP line here 👇
www.jepistons.com/je-auto-blog/budget-power-srp-srp-pro-and-srp-pro-2618-pistons/
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What's the advantage of 2618 vs 4032?
Just recieved my SRP 383 pistons this week, I'm looking forward to this engine for our speedway racer
To bad they're never in stock
Are you breaking in your engine properly? After you grab a set of pistons from our Black Friday Sale, make sure you're maximizing the life and power of your engine! ... See MoreSee Less

How To Break-In An Engine | JE Pistons
www.jepistons.com
You have one chance to break-in an engine correctly. Doing it the right way is worth power, torque, and engine longevity. We walk you through the ideal way to26 CommentsComment on Facebook
Interesting, and informative. 👍
Very good article.
JE Pistons Great info ! It’s always good to have a “refresher”. Love the tech stuff.
Great write up , very informative
Good information, especially about moly rings. Thanks
Send it
Charley Loyd this is how to do it right. Please read article
Thanks
Yes with full send
I am one of techs at JE PISTONS and also an engine builder. You can use non synthetic ATF too (works great).
Why does the cylinder hone job look like a poor mans attempt with clogged stones, coming from a high end shop? Haven't went to the article to read yet but to me, your stones are cutting bad and very uneven.
Is breakin a thing anymore? Today's finishes and tolerances don't need much breakin. Top fuel dragster will run brand new rings and cylinders with no break in... just sayin.
Proper way is to run it normal for a few minutes then run the dog shit out of it. If it was built properly it’ll hold up.
When I worked at Ford during the 70's and we had a vehicle come in using oil, Ford would have us pull the belts off and idle the engine until it overheated and blew coolant out the radiator overflow. Let it Cool overnight and do it one more time. Then send it home. Never had one come back again, using excessive oil.. I was told the high heat thins the oil on the cylinder wall and expands the piston and rings, forcing the rings against the cylinder walls, seating them.. seemed to work.
The problem is by the time you get the pistons race season is over lol
With the amount of opinions on how it should be done? I doubt that you could get more than a dozen people to agree
This is a good article that keeps talking about the “ideal” engine start-up. But what about the less that perfect conditions that make up the real world? There are so many variables that can (and often do) make for less than “ideal” conditions. 40 years of wrenching has shown me that “new parts” is no guarantee of a quality product. Thermostats stick, electric fans don’t come on, timing adjustments, fuel mixture problems, charging system problems, automatic transmission fluid level needs to be topped up, and it’s almost guaranteed to have a leak somewhere. The first 30 seconds of a new start up is, quite frankly, a semi-controlled panic. If something is not correct or can’t be corrected quickly, DO NOT continue with engine break in. You don’t want to ruin a new engine because you insisted on running it for 20 minutes while ignoring other issues.
Wd40.
WFO
Good info.. all I use are JE pistons. still haven't received my contingency check from April..
Need to contact you guys for a set of bmw M20 seta pistons.
Start being it to temp , take it for a ez ride , for about 20 minutes, come back check it over , and head to the drags and bet the shit out of it , never a problem, it’s ether going to hold together or break,
New build and start, set the engine at 2000rpm and run for 20 mins? Check oil pressure,drive for 10-15 miles in town. 30 plus years of building engines always done it the same. Longevity is in the parts inside. Build for what you plan on running. JE have always gone in all my big block builds.
3 pulls on dyno @ 6500 3 pulls & 7000rpm 3 pulls @ 7500 3 pulls @ 8000 Engine is broke in, ready to hammer 🏁
Black Friday sale happening now! Visit jepistons.com to get up to 25% off your favorite JE Piston products! ... See MoreSee Less
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